/**
 * Created with IntelliJ IDEA
 * Description:多线程和单线程
 * User:恋恋
 * Date:2022-11-26
 * Time:11:46
 */
public class TestDemo {
    public static void str(){
        long being = System.currentTimeMillis();
        for (int i = 0; i < 100_0000_0000L; i++) {

        }
        long end = System.currentTimeMillis();
    }
    public static  void Ctr(){

    }
}
